Murder in a Wheel (short MiaW) is a retro-adventure emulating the style of old LucasArts titles.
Those familiar with games like Day of the Tentacle or Monkey Island will immedately recognize the interface.
As the name already suggests, the game is a murder mystery and, more specifically, a locked room mystery.

MiaW was created with AGS (Adventure Game Studio) and currently runs on Windows only.
There are ports of AGS for Linux and Mac (beta), but I was unable to test them.

MiaW was a semester work (Game Design, Interactive Storytelling) at the Zurich University of the Arts (ZHdK), and it won the Best Short Game AGS Award in 2007.

Screenshots from Murder in a Wheel

Story

Roderick, Lady Blackwin's beloved pet hamster, was cruelly murdered.
Her husband Lord Blackwin asks the amateur detective/pizza delivery guy Lionel Ulmer to solve the case and find the murderer.
Curiously, Roderick was killed in a room that had been locked the entire evening.